diff --git a/python/sglang/srt/models/deepseek_v2.py b/python/sglang/srt/models/deepseek_v2.py
index 0db0ca164..73ff4c1c7 100644
--- a/python/sglang/srt/models/deepseek_v2.py
+++ b/python/sglang/srt/models/deepseek_v2.py
@@ -1965,6 +1965,7 @@ class DeepseekV2AttentionMLA(nn.Module):
             tmp_lse = torch.empty_like(accum_lse)
             merge_state_v2(output, lse, accum_output, accum_lse, tmp_output, tmp_lse)
             accum_output, accum_lse = tmp_output, tmp_lse
+            del kv, k, v, output, lse, tmp_output, tmp_lse
 
         return accum_output